The effect size (
) is
A) the size of the difference between the means.
B) the size of the samples you use.
C) the difference between the means scaled by the size of the standard deviation.
D) the width of the distribution.

Question

The effect size (
 ) is
A) the size of the difference between the means. 
B) the size of the samples you use. 
C) the difference between the means scaled by the size of the standard deviation. 
D) the width of the distribution.

Quizplus · Accepted Answer

The effect size is calculated by taking the difference between the means of two groups and scaling it by the size of the standard deviation. This allows for a standardized measurement of the difference between the groups that can be compared across studies and variables. It is not related to the size of the samples or the width of the distribution.

The Effect Size